(;GM[1]FF[4]SZ[19]
GN[Var 4]
PC[http://senseis.xmp.net/?DieterVerhofstadt/SolvingProblems]AP[GoWiki:2009]
DT[2014-03-27]
C[Diagram from http://senseis.xmp.net/?DieterVerhofstadt/SolvingProblems

Var 4]
PL[B]

AB[mo][no][op][oq][or][os]
AW[on][oo][qo][np][pp][nq][qq][nr]

;B[qr]C[B1]MN[1]
;W[rr]C[W2]MN[2]
;B[qs]C[B3]MN[3]
;W[pr]C[W4]MN[4]
;B[pq]C[B5]MN[5]
;W[ns]C[W6]MN[6]
;B[ps]C[B7]MN[7]
;W[rs]C[W8]MN[8]

;
)
